Re: user enumeration through RDP

[Jeremy Pommerening <theaudioman () yahoo com>]

It still displays username unless you specifically tell it not to via GPO or local machine policy.  Interactive Logon: 
"Do not display last user name" Enable or Disable.
 
Jeremy Pommerening
CISSP,GCFA,GPEN,GAWN,GCFW, GWAPT,
MCSE Win2K, MCSE NT4


________________________________
 From: Michael Salmon <lonestarr13 () gmail com>
To: PaulDotCom Security Weekly Mailing List <pauldotcom () mail pauldotcom com> 
Sent: Tuesday, April 23, 2013 1:47 PM
Subject: Re: [Pauldotcom] user enumeration through RDP
 


Does RDP on Windows 7 still give the logged in username?  Working with W7 I haven't seen it anymore but it may be that 
it's been disabled in my environment and I didn't realize it.



On Tue, Apr 23, 2013 at 1:18 PM, Carlos Perez <carlos_perez () darkoperator com> wrote:

No clue on that 
> On Apr 23, 2013, at 12:32 PM, Robin Wood <robin () digininja org> wrote:
>
>
> > On Apr 23, 2013 5:07 PM, "Carlos Perez" <carlos_perez () darkoperator com> wrote:
> > > This was what I was alluding to  
> > > http://www.tenable.com/blog/nessus-52-released
> > >
> > > Nessus will now grab VNC and RDP Screenshots 
> > Looks pretty cool. Any chance of building in character recognition in to read the active user?
> > Robin
> > > Sent from my iPhone
> > >
> > > On Apr 23, 2013, at 3:29 AM, Matt <matt () fireantsecurity co uk> wrote:
> > >
> > > > If you are at BSidesLondon tomorrow we can chat then.
> > > >
> > > >
> > > > Sent from my iPhone
> > > >
> > > > On 21 Apr 2013, at 23:05, Robin Wood <robin () digininja org> wrote:
> > > >
> > > > > On 18 April 2013 15:36, Matt <matt () fireantsecurity co uk> wrote:
> > > > > > You can do more than that. Can't say much more but RDP has some useful "features" that can be leveraged to gain 
> > > > > > a higher level of access if you know your way round windows api.
> > > > >
> > > > > Pointers to any info? I don't know much about the windows API but might be worth looking at.
> > > > >  
> > > > > > Sent from my iPhone
> > > > > >
> > > > > > On 18 Apr 2013, at 01:36, Robin Wood <robin () digininja org> wrote:
> > > > > >
> > > > > > > I've just noticed a nice little trick for user enumeration. The client I'm testing has RDP on almost every 
> > > > > > > windows machine and when you connect to them, if there is a user already connected they tell you who it is. 
> > > > > > > Luckily here most of them do have someone logged in. It is a manual job but has got me a nice little stash of 
> > > > > > > usernames which is good as all my usual techniques failed. Of extra lucky, by naming and subnets I know which 
> > > > > > > the servers are so I'm assuming users connected to them are either admins or at least have more privileges 
> > > > > > > than a normal user.
> > > > > > >
> > > > > > > Thought others might find it useful.
> > > > > > >
> > > > > > > Robin
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